Smoke-consuming device



Aug. 28, 1923. 1,466,181

R. GQLMAKINSON SMOKE CONSUMING DEVICE Filed July 29. 1922 2 Sheets-Shet l INVENTOR ATTORNEY Aiig'. 28; F923.

R. G. MAKINSON,

SMOKE CONSUMING DEVICE Filed July 29. 1922 2 Sheets-Sheet 2 Patented Aug. 28, 1923. I

7 acre; MAKINSOrL or BUTTE',MO1\TTAKA.

sno E-consumns Davida 7 Application filed July a, ma. Serial 3161578375. 1 '1 i Z '0 all whom it may concern:

Be it known that I, ROY Gr. MAKINSON, a citizen of the United States, residing at Butte, in the county of Silver Bow and State of Montana, have invented certain new and useful Improvements in Smoke- Consuming Devices, of which the following is aspecification.

The invention relates to smoke consuming devices for stoves or furnaces, and has as an object the provision of such a device that shall consume the smoke and combustible gases effectively, and shall utilize the heat derived from such combustion.

A further object of the invention is the provision of a smoke consuming device wherein the gases from the the are conducted through an annular fiue surrounding the fire pot with admission of flame and air to the flue for combustionof the gases. A further object of the invention is the provision of a smoke consuming device having means for admission of water vapor and air to aid in the combustion. Further objects will appear from. the following description when read in connection with theaccom panying drawings showing an illustrative embodiment of the invention, and wherein Fig, 1 is a detail perspective view of. the device partly broken away; V

Fig. 2 is a detail side elevation of a bypass;

an end. view in connection therewith of an air admission adjustment device;

Fig. 4 is a detail vertical. section on line 4-4: of Fig 1, and I V Fig. 5 is a horizontal section on line 5-5 of Fig. 4 looking in the direction of the arrow,

As shown the device is in the form of an annular fire pot orflue 10 wherein the grate is located at 11, the fire pot being formed of some refractory material, such as cast iron, or fire brick.

A smoke pipe 12 is shown communicating with the interior of the annular fire pot or flue, a partition being provided at 13 which completely divides the space withintheflue. A collar: 14: is shown making a tight joint at its lower edge 15' with the upper surface of the fire pot 10 and opening into the same at 16 beyond the partition 13, which partition extends across'the fire pot in. a vertical plane forming-a downward extension of one side of the smoke pipe12. ,The smoke and gases fromtheinterior of the firefpot are drawn by the draft of the furnace in a v course" shown by the lines 17 overjthe edge of-the collar, and through the 'spac eflfi into the interioroflthe annular flue, after which the gases encircle the flue, as indicated by the dashed lines until they reach the proximity of the partition 13, when they are drawn up smoke pipe 12.} i The gases being in a highly heated'condition as they leave the fire and the inner wall'of the flue 10' being. in contact with the burning fuel maintains the heatedcondition of the gases in their course through the annular flue. To ensure the combustion of the gases'while passing through the flue, small openings;'1819 are shown through the interior wall of the flue through which openings flame maybe drawn from the fire for the purpose mentioned. y

I To provide air for combustion of the gases in the flue, pipes 20-21 are shown which extend to the] exterior of the stove or furnace. For control of the, admission of air'through the. pipes 20-21 a device, such as shown in Fig. 3, may be applied to such pipes, comprising'a threadedextremity 22 of the pipe and an interiorly threaded provided in the end'of the pipe. I

To check the flow of'the gases intheir course about the flueand to provide an additional suction upon the air pipe 21, a baflie 26 is shown extending "across 'the annular space and throughout a-portion only of itsdepth. The admission opening 19 for flame ,isshown justbehind this bafiie, and

the connection of pipe 21 with the flue is in the; rear of; the theme, so that thesli-ght excess of vacuum caused by the baffle will'result in a drawing in of air through the pipe 21 andflame, through the openingl1-9' injexcess ofthe amount which would be drawn without the baffle,

When starting a fire withthe'fire p ot cold the draft might have diliicult'y in drawing the smoke through the tortuous channel provided by the annular fine, and moreover the 'walls' of'the flue wouldno't be heated hot I enough to cause combustion of these gases. Also, when the furnace door sopened, an

easier escape being provided for gases, might cause escape of gas into the room in which the furnace is located. 7 To avoid these dilflculties, a by-pass is shown in the form of a damper 27, showiiin detail in Fig. 2.

i Asshown, the damper is pivoted'at 2S, and

is provided with a weight 29 integral with the lower edge'ther'eof to ensure the tight closingof the damper. The damper may be opened when desired by means of a rod 30 acting upon a lever 31, the rod 30 passing of the receptacle to the interiorof the pipe 20', dipping downwardly there-in so' as to have its mouth adjacent to the mouth of the pipe 20 within the flue.

' Water may be supplied to the receptacle 34 by means of a pipe 36 incommu ication with a reservoir 37 exteriorotthe furnace but of less height than the receptacle 34, so that the supply of water shall not overflow into the pipe 35. A check valve is shown at 38 so that steam pressure within the receptacle 34: can not drive the water "back into the reservoir '37. A pipe 39 is shown which may be connected to thewater supply of the building. 1

' While the flue of the fire pot is shown as circular in its horizontal cross section, it will be understoodthat the same will be made to fit the fire pot of the stove or fun nace no matter what its form,'whether circular, rectangular or polygonal, it being only necessary that thesame should surround the combustion space and be in contact with the fire upon its interior'walls t accomplish the purpose described.

\dinor changes may be made in the physical embodiment of the invention without departing from its spirit. What I'claim is: V

1. In a smoke consuming device, in com-- bination, an annular fiue comprising a closed space having inner and outer walls, said flue adapted to have its inner walls in contact with the fire, a smoke pipe in direct communication'with said flue, said flue having an opening adjacent the smoke pipe for admission of products of combustion, and means within the flue to cause the products of combustion to encircle the flue to reach the smoke pipe.

2. In a smoke consuming device, in combi nat on, an annular flue comprising a closed space having inner and outer walls, said flue adapted to have its inner walls in conmit air behind ,said balfle.

ing an opening adjacent the smoke pipe for admission of products of combustion, means 7 .within thefflue to cause the products of combustion to encircle the flue to reach the smoke pipe,.and means to admit air to said 1 flue to complete combustion ot unburned K gases' 3. In a smoke consuming device, in combination, an annular flue comprising a closed space having inner and outer walls, said flue adapted to have its inner wall in con: tact with the fire, a smoke'pipe in direct communication with said'flue, said flue'hav: ing an opening adjacent the smoke pipe for admission-of products of combustion, means within the flue to cause the products of combustion toencircle the flue to reach the smoke pipe, means to admit air to said flue to complete combustion of unburned gases, and means to admit flame to said flue to ignite said unburned gases. I I i. A smoke consuming device'comprising, incombination an annular the pot having inner and outer walls providing an annular flue therebetween, upper and lower walls closing the flue space between said inner and outer walls, a. smoke pipe in communication with .said flue, a partition in said flue adjacent one side of said pipe, an opening in said upperwall adjacent said partition for admission of products of combustion to said flue, said partition'being between said opening and the communicationwith said smoke pipe. j

5. A smoke consuming device comprising, in combination, an annular flue providing a combustion space therewithin, an opening hind said baifle.

6. A smoke consuming device comprising, I

in combination, an annular flue providing a combustion space therewithi'n, an opening 7 into said flue for admission of products of combustion from above the fire, a smoke pipe communicating with said flue adjacent the opening, a partition dividing said flue between the opening and smoke pipe whereby gases entering .said flue must encircle the same to reach the pipe, acollar about said opening, said collar enclosing and spaced from the base of said smoke pipe, a baflie in said flue to check said gases and means to ad- 7 A smoke consuming devicecomprising, in combination, a flue adapted to be in con- 7' tact with the fire at one wall thereof and having an opening for admission of gases from above the fire, means for admitting air to the flue comprising an inlet pipe having a threaded extremity and a cutaway portion adjacent thereto, a sleeve adapted to be screwed upon said extremity to cover more or less of said cutaway portion and means to close the free end ofthe sleeve. v i

8. A smoke consuming device comprising, in combination, a flue adapted to have one wall in contact withthe fire, and an opening to admit gases from above the fire, an air pipe to admit air to said flue, means to admit steam with said air comprislng an enclosed receptacle located within the heater, a pipe connecting the top of the receptacle with the interior of said air pipe, a. reservoir located outside the heater, a pipe connecting said reservoir and the bottom of said receptacle, the top of the reservoir being below that of the receptacle, and a check valve in I the last named pipe. y

9. A smoke consuming device comprising,

in combination, an annular fire pot comprisin spaced inner andouter walls, and annu ar closures for the top and bottom of the space between said walls to provide an an- V nular flue, 'a smoke pipe connected. tosaid flue, said top closure having an openingad- 7 jacentcsaid smokepipe-to admit gases from? abovethe fire to said flue, a partition--be ROY G. MAKINsoNI 

